Let's divide 87240715 by 401
We're looking to find how many times 401 goes into 87240715.

Advancing to step 1:
When dividing 8 by 401, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 401

On to step 2:
87 divided by 401 is 0 with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Bring next digit (2) of the dividend behind the 87 and repeat the process: 872 / 401

Going ahead to step 3:
401 goes into 872 2 times with a remainder of 70.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 802 from 872, we get 70.
Append the next digit (4) from the dividend to 70 and continue with: 704 / 401

Moving on to step 4:
When dividing 704 by 401, we get 1 with a remainder of 303.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we subtract 401 from 704, we get 303.
Append the next digit (0) from the dividend to 303 and continue with: 3030 / 401

Going ahead to step 5:
401 can be fit into 3030 7 times, resulting in a remainder of 223.
The number 7 becomes the next digit in our result. 
Result so far: 217.0
Deduct 2807 from 3030 and we're left with 223.
Take the next digit (7) from the dividend and append it to 223, then repeat: 2237 / 401

Step 6:
When dividing 2237 by 401, we get 5 with a remainder of 232.
The next digit of our result is 5. 
Result so far: 2175.0
The remainder is 232 after subtracting 2005 from 2237.
Grab the next digit (1) from the dividend, add it to 232, then carry on: 2321 / 401

On to step 7:
The number 401 fits into 2321 5 times, leaving a remainder of 316.
Put 5 as the next digit of the answer. 
Result so far: 21755.0
Deduct 2005 from 2321 and we're left with 316.
Take the next digit (5) from the dividend and append it to 316, then repeat: 3165 / 401

Advancing to step 8:
401 can be fit into 3165 7 times, resulting in a remainder of 358.
Write down 7 as next digit of the result. 
Result so far: 217557.0
If we subtract 2807 from 3165, we get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Moving on to step 9:
401 can be fit into 3580 8 times, resulting in a remainder of 372.
Record the quotient 8 as the next digit in the result. 
Result so far: 217557.8
Subtract 3208 from 3580 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 10:
401 goes into 3720 9 times with a remainder of 111.
Write down 9 as next digit of the result. 
Result so far: 217557.89
Subtracting 3609 from 3720 leaves us with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Moving on to step 11:
If we divide 1110 by 401, we get 2 and a remainder of 308.
Use 2 as the next digit of our solution. 
Result so far: 217557.892
If we subtract 802 from 1110, we get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 12:
401 goes into 3080 7 times with a remainder of 273.
Write down 7 as next digit of the result. 
Result so far: 217557.8927
Subtracting 2807 from 3080 leaves us with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Moving on to step 13:
2730 divided by 401 is 6 with a remainder of 324.
Record the quotient 6 as the next digit in the result. 
Result so far: 217557.89276
The remainder is 324 after subtracting 2406 from 2730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 14:
If we divide 3240 by 401, we get 8 and a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 217557.892768
Subtract 3208 from 3240 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 15:
If we divide 320 by 401, we get 0 and a remainder of 320.
The next digit of our result is 0. 
Result so far: 217557.892768
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 16:
3200 divided by 401 is 7 with a remainder of 393.
The number 7 becomes the next digit in our result. 
Result so far: 217557.89276807
If we take 2807 away from 3200, we end up with 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

The final result is 217557.89276807 with a remainder of 3.93e-07.